An unusual record of three species of whale being restricted to pools in Antarctic sea ice

first_imgDuring the winter in the Crown Prince Gustav Channel in Graham Land, ice tends to form at the northerly end first, thus isolating pools of open water. The pools normally freeze some two months later; but in 1955 this unusual pattern of sea‐ice formation cut off nearly 200 whales from the open sea. Originally there were 120 Lesser Rorquals Balaenoptera acutorostrata, sixty Killer Whales Orcinus orca and one Berardius arnuxi. The activity of the whales prevented the pools freezing completely, but there was marked crowding and some unusual photographs were taken. All the Killer Whales and many Lesser Rorquals disappeared after four months. They may have died or travelled 65 kilometres under the ice to open water. The latter is more likely. However some twenty Lesser Rorquals stayed by the pools for six months and latterly very little if any food can have been available. The single species of Berardius was shot at by Argentine soldiers and presumably killed. It is suggested that the initial concentration of whales and also of seals may have been due to a large concentration of plankton.last_img read more

Early life history strategies of notothenioids at South Georgia

first_imgAntarctic notothenioid early life history strategies are examined in general and then for common species at South Georgia. Channichthyids, bathydraconids, artedidraconids and some nototheniids have large eggs 3·0–4·9 mm whereas other nototheniids and arpagiferids have smaller eggs 1·6–2·7 mm. At South Georgia the larvae of species with large eggs hatched between August (late winter) and late November (late spring) at 11–16 mm standard length (Ls). Larvae of species with small eggs hatched mainly during October and December at 4.5–9 mm Ls. Most of the larvae of all species attain urostyle flexion between October and January, and develop to the end of the larval stage between November and May. The duration of the larval stage varies from 2 months in species with smaller larvae to 6 months for some of the species with larger larvae. Two nototheniid species develop to the early juvenile stage before a channichthyid and a bathydraconid that hatch around 2 months earlier. During their first winter, the early-juveniles of most species with large eggs are pelagic, whereas those of species with small eggs may be pelagic or demersal. Four groups of strategies are proposed based on egg size and the winter ecotype of the early-juvenile stage.last_img read more

Quantifying variation in δ 13C and δ 15N isotopes within and between feathers and individuals: Is one sample enough?

first_imgStudies of avian migration increasingly use stable isotope analysis to provide vital trophic and spatial markers. However, when interpreting differences in stable isotope values of feathers, many studies are forced to make assumptions about the timing of moult. A fundamental question remains about the consistency of these values within and between feathers from the same individual. In this study, we examine variation in carbon and nitrogen isotopes by sub-sampling feathers collected from the wings of adults of two small congeneric petrel species, the broad-billed Pachyptila vittata and Antarctic prion P. desolata. Broad-billed prion feather vane material was enriched in 15N compared to feather rachis material, but there was no detectable difference in δ 13C. Comparison of multiple samples taken from Antarctic prion feathers indicated subtle difference in isotopes; rachis material was enriched in 13C compared to vane material, and there were differences along the length of the feather, with samples from the middle and tip of the feather depleted in 15N compared to those from the base. While the greatest proportion of model variance was explained by differences between feathers and individuals, the magnitude of these within-feather differences was up to 0.5 ‰ in δ 15N and 0.8 ‰ in δ 13C. We discuss the potential drivers of these differences, linking isotopic variation to individual-level dietary differences, movement patterns and temporal dietary shifts. A novel result is that within-feather differences in δ 13C may be attributed to differences in keratin structure within feathers, suggesting further work is required to understand the role of different amino acids. Our results highlight the importance of multiple sampling regimes that consider both within- and between-feather variation in studies using stable isotopes.last_img read more

Global spatial ecology of three closely-related gadfly petrels

first_imgThe conservation status and taxonomy of the three gadfly petrels that breed in Macaronesia is still discussed partly due to the scarce information on their spatial ecology. Using geolocator and capture-mark-recapture data, we examined phenology, natal philopatry and breeding-site fidelity, year-round distribution, habitat usage and at-sea activity of the three closely-related gadfly petrels that breed in Macaronesia: Zino’s petrel Pterodroma madeira, Desertas petrel P. deserta and Cape Verde petrel P. feae. All P. feae remained around the breeding area during their non-breeding season, whereas P. madeira and P. deserta dispersed far from their colony, migrating either to the Cape Verde region, further south to equatorial waters in the central Atlantic, or to the Brazil Current. The three taxa displayed a clear allochrony in timing of breeding. Habitat modelling and at-sea activity patterns highlighted similar environmental preferences and foraging behaviours of the three taxa. Finally, no chick or adult was recaptured away from its natal site and survival estimates were relatively high at all study sites, indicating strong philopatry and breeding-site fidelity for the three taxa. The combination of high philopatry, marked breeding asynchrony and substantial spatio-temporal segregation of their year-round distribution suggest very limited gene flow among the three taxa.last_img read more

Eastern rockhopper penguins Eudyptes filholi as biological samplers of juvenile and sub-adult cephalopods around Campbell Island, New Zealand

first_imgEarly life-history stages of cephalopods are known to play an important role as prey in food webs of the Southern Ocean, but little information is available about their biology and availability to predators. Top predators, such as penguins, are known to feed regularly on coastal juvenile/sub-adult cephalopods. Using eastern rockhopper penguins Eudyptes filholi as coastal biological samplers, we examined in detail the cephalopod component of their diet in Campbell Island (New Zealand) during two consecutive breeding seasons in order to evaluate (1) the relative importance of cephalopods (by frequency of occurrence, by number and by mass) to the diet of both adult and chick penguins, (2) the habitat and trophic levels of the cephalopods in the region and (3) the status of the juvenile/sub-adult cephalopod community in the waters around Campbell Island. Our results show that eastern rockhopper penguins feed on eight species of juvenile and sub-adult cephalopods, with Onykia ingens, Martialia hyadesi and Octopus campbelli being the most important species by frequency of occurrence, number and mass. Differences between the diets of adult and chick penguins and between breeding seasons were found. Habitat (δ13C) and trophic level (δ15N) information also showed that all cephalopod species (and all studied stages) occupy similar habitat on the Campbell shelf, with M. hyadesi showing lower δ15N values than O. ingens and O. campbelli. This study indicates that eastern rockhopper penguins can be valuable biological samplers of local juvenile/sub-adult cephalopods (including poorly known cephalopod species) around Campbell Island when breeding, that these cephalopods were likely to be caught naturally (not from fisheries), providing relevant information for the conservation of these penguins.last_img read more

Aaron Hernandez’s former attorney discusses two-part docu-series on the football star’s death, trials, and aftermath

first_img FacebookTwitterLinkedInEmailiStock/Thinkstock(NEW YORK) – Former New England Patriots tight end Aaron Hernandez died in a jail cell in April 2017 while serving a life sentence for the murder of Odin Lloyd. Jose Baez, Hernandez’s lead defense attorney in the trial for which Hernandez was acquitted of two murder charges, is featured in a new, two-part docu-series titled “Aaron Hernandez Uncovered.”The series features accounts from people close to Hernandez, uncovers medical revelations, and examines different testimonies. Baez recently talked about the new project and the unfolding of Hernandez’s trial and tragic death in a conversation with ABC News.“It’s a tragedy all the way around,” Baez says, describing how the documentary attempts to present Hernandez in ways the public may not have seen during his trials:“While this series uncovers many things that are for Aaron, but also things that don’t look good for him, I think it’s a little bit more open-minded than some of the things you’ve seen on TV… this gives you a more balanced approach.”Once a star NFL tight end, Hernandez died on April 19, 2017 in his jail cell at 27-years-old, shortly after he was acquitted of murder charges. He was at the time serving a life sentence without the possibility of parole for the 2013 killing of Odin Lloyd. His death was ruled a suicide.Last year, the Massachusetts Department of Correction told ABC News that there was no prior concern that Hernandez was suicidal and he would have been on mental health watch in a different part of the prison if there were.Others around Hernandez, including Baez, expressed shock after learning of his death Baez’s law firm called for a “transparent and thorough investigation” of his death. He continued, “there were no conversations or correspondence from Aaron to his family or legal team that would have indicated anything like this was possible.”Baez told ABC News that the docu-series also addresses the way the degenerative brain disease CTE (chronic traumatic encephalopathy) may have factored into Hernandez’s death:“One of the things that disturbed me about Aaron’s death was all of the mudslinging that came out by the people that didn’t know him… “As it relates to his CTE, that is certainly part of the documentary series… We address the issue [of CTE]… and how you put it in a legal context.”The defense attorney concedes the docu-series does not necessarily present Hernandez in a positive light, saying it is not “an Aaron Hernandez ‘lovefest.’” Rather, Baez believes, it is a chance for viewers to see different sides of Hernandez that are not solely focused on the trials that the public saw towards the end of his life:“I think what this series does is puts everything into context, and then gives the viewers the ability to say, ‘Well, maybe this is what happened, and perhaps it wasn’t what I originally thought.’ Aaron had a lot of people who believed in him, who understood him a lot better than many of those in the media and law enforcement, and we wanted to show people a different side of that.”The two-part docu-series premieres on the Oxygen Network on two nights. Part one airs on Saturday, March 17 and part two on Sunday, March 18. Baez was a consulting producer for the series.Copyright © 2018, ABC Radio. All rights reserved. March 15, 2018 /Sports News – National Aaron Hernandez’s former attorney discusses two-part docu-series on the football star’s death, trials, and aftermath Written bycenter_img Beau Lundlast_img read more

Utah NCAA Women’s Soccer Roundup: 8/26

first_img Written by FacebookTwitterLinkedInEmailCEDAR CITY, Utah-Payton Lieb and Kylie Minamishin each scored as the Nevada Wolfpack doubled up Southern Utah 2-1 Sunday in NCAA non-conference women’s soccer action at Thunderbird soccer field. Devri Hartle scored the first goal of the game, 64:41 in, to give the Thunderbirds a short-lived 1-0 lead. Kendal Stovall earned the win for the Wolfpack, posting six saves in the win. Nevada improved to 3-0-1 with the win while the Thunderbirds slumped to 1-3.IRVINE, Calif.-Makayla Christensen found the net at the 83:53 mark as the Utah Utes tied UC Irvine 1-1 in NCAA non-conference women’s soccer action Sunday. The Anteaters took a 1-0 lead at the 19:09 mark. As the Utes secured the tie, they currently sport a record of 1-1-1 while the Anteaters fell to 0-2-1. Brad James August 26, 2018 /Sports News – Local Utah NCAA Women’s Soccer Roundup: 8/26 Tags: Anteaters/Devri Hartle/Kendal Stovall/Kylie Minamishin/Makayla Christensen/Nevada Wolfpack/Payton Lieb/Southern Utahlast_img read more

Prep Sports Roundup: 10/23

first_img FacebookTwitterLinkedInEmailVolleyballRegion 12CASTLE DALE, Utah-The South Sevier Rams stymied Emery 3-0 Wednesday in Region 12 volleyball action. The Rams prevailed 25-12, 25-17 and 25-19 for the straight sets victory.Region 18PAROWAN, Utah-Kanab downed Parowan 3-0 in Region 18 volleyball action Wednesday. Kanab prevailed 25-11, 25-22 and 25-23 in straight sets over the Rams. October 23, 2019 /Sports News – Local Prep Sports Roundup: 10/23 Written by Tags: Volleyball Brad Jameslast_img read more

Scoreboard roundup — 3/11/21

first_img Beau Lund FacebookTwitterLinkedInEmailiStockBy ABC News(NEW YORK) — Here are the scores from Thursday’s sports events:NATIONAL BASKETBALL ASSOCIATIONCharlotte 105, Detroit 102Brooklyn 121, Boston 109Atlanta 121, Toronto 120Philadelphia 127, Chicago 105Milwaukee 134, New York 101Miami 111, Orlando 103Minnesota 135, New Orleans 105Oklahoma City 116, Dallas 108Phoenix 127, Portland 121Sacramento 125, Houston 105LA Clippers 130, Golden State 104NATIONAL HOCKEY LEAGUEPittsburgh 5, Buffalo 2Boston 4, NY Rangers 0Carolina 5, Nashville 1NY Islanders 5, New Jersey 3Florida 5, Columbus 4 (OT)Toronto 4, Winnipeg 3Washington 5, Philadelphia 3Detroit 6, Tampa Bay 4Chicago 4, Dallas 2Calgary 2, Montreal 1TOP-25 COLLEGE BASKETBALLBaylor 74, Kansas St. 68Ohio St. 79, Minnesota 75Oklahoma St. 72, West Virginia 69Kansas 69, Oklahoma 62Texas 67, Texas Tech 66Georgetown 72, Villanova 71Virginia 72, Syracuse 69Creighton 87, Butler 56San Diego St. 69, Wyoming 66North Carolina 81, Virginia Tech 73Southern Cal 91, Utah 85Colorado 61, California 58Duke at Florida St. (Canceled)Copyright © 2021, ABC Audio. All rights reserved. March 12, 2021 /Sports News – National Scoreboard roundup — 3/11/21center_img Written bylast_img read more

Kinder Morgan set to commission $1.75bn Gulf Coast Express pipeline

first_imgThe 720km-long Gulf Coast Express Pipeline Project, which has been built in Texas, US, can transport nearly 2BCF of natural gas from Permian Basin to the Texas Gulf Coast The Gulf Coast Express Pipeline Project is a 720km -long natural gas pipeline in Texas (Credit: Pixabay) Kinder Morgan is set to commission the Gulf Coast Express Pipeline Project (GCX), a 720km-long natural gas pipeline built with an investment of around $1.75bn (£1.4bn) in Texas, on 25 September.The company said that the 42-inch natural gas pipeline, which broke ground in May 2018, will start operations ahead of schedule.The Gulf Coast Express Pipeline Project has been designed to transport around 2bn cubic feet (BCF) of natural gas per day drawn from the Waha Hub and other points in the Permian Basin to the Agua Dulce Hub near the Texas Gulf Coast.Kinder Morgan said that the natural gas pipeline is fully subscribed under long-term contracts, and will help ease the current Permian Basin gas takeaway constraints and help bring down natural gas flaring.Kinder Morgan natural gas midstream president Sital Mody said: “We are pleased to place GCX in service safely and ahead of schedule for our customers, helping to unlock tremendous value for the State of Texas.“I am very proud of our team’s ability to execute. We had over 3,000 contractors deployed at times and more than six million contractor hours worked – all without a major safety incident during the construction phases of the project.“With natural gas supplies projected to rise over the next 20 years from supply basins such as the Permian, our strong network of pipelines provides the ability to connect this supply to the growing markets along the Gulf Coast.”Stakeholders in the Gulf Coast Express Pipeline ProjectKinder Morgan’s subsidiary – Kinder Morgan Texas Pipeline holds an operating stake of 34% in the Gulf Coast Express Pipeline Project. Its partners in the natural gas pipeline project are Altus Midstream, DCP Midstream, and an affiliate of Targa Resources.As part of the Gulf Coast Express Pipeline Project, an 80km long, 36-inch diameter lateral pipeline has also been laid to connect to the Midland Basin. The lateral pipeline connects to the Targa-owned associated compression to serve gas processing facilities and facilities owned jointly by Pioneer Natural Resources and Targa.last_img read more